Fixate size of the Tape 'Config dialog' only after first show.

--HG--
branch : develop

src/app/tape/dialogs/tapeconfigdialog.cpp

@@ -44,10 +44,9 @@ TapeConfigDialog::TapeConfigDialog(QWidget *parent)
       pathPage(nullptr),
       applyButton(nullptr),
       canselButton(nullptr),
-      okButton(nullptr)
+      okButton(nullptr),
+      isInitialized(false)
 {
-    this->setMaximumHeight(300);
-
     contentsWidget = new QListWidget;
     contentsWidget->setViewMode(QListView::IconMode);
     contentsWidget->setIconSize(QSize(96, 84));
@@ -133,6 +132,27 @@ void TapeConfigDialog::changeEvent(QEvent *event)
     QDialog::changeEvent(event);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void TapeConfigDialog::showEvent(QShowEvent *event)
+{
+    QDialog::showEvent( event );
+    if ( event->spontaneous() )
+    {
+        return;
+    }
+
+    if (isInitialized)
+    {
+        return;
+    }
+    // do your init stuff here
+
+    setMaximumSize(size());
+    setMinimumSize(size());
+
+    isInitialized = true;//first show windows are held
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void TapeConfigDialog::createIcons()
 {

src/app/tape/dialogs/tapeconfigdialog.h

@@ -49,6 +49,7 @@ signals:
 protected:
     virtual void      closeEvent(QCloseEvent *event) Q_DECL_OVERRIDE;
     virtual void      changeEvent(QEvent* event) Q_DECL_OVERRIDE;
+    virtual void      showEvent(QShowEvent *event) Q_DECL_OVERRIDE;
 private:
     Q_DISABLE_COPY(TapeConfigDialog)
     QListWidget           *contentsWidget;
@@ -58,6 +59,7 @@ private:
     QPushButton           *applyButton;
     QPushButton           *canselButton;
     QPushButton           *okButton;
+    bool                  isInitialized;
 
     void createIcons();
     void createIcon(const QString &icon, const QString &text);